And just as the glorification of all creatures looks to the Name of Most Holy, so also does the Name of Most Holy require the cleanliness of all of them.(1)

It is because of this sacred connection of cleanliness that the Hadith,

"Cleanliness is a part of belief" deems it to be a light of belief. And the verse,

Indeed, God loves those who turn to Him constantly and He loves those who keep themselves pure and clean(2)

shows that cleanliness is a means of attracting God’s love.

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(1) We must not forget that bad qualities, false beliefs, sins and innovation are all instances of moral and spiritual dirt.
(2) Qur’an, 2:222.